The things Xingchen said were almost all adjustments that changed the level of heaven and earth.

Although the people of the earth will say that they are victorious over the sky, when they really face the heaven and the earth, they are extremely powerless.

And even though the stars have shrunk hundreds of millions of times, they can still knead a planet larger than the Earth at will.

For example, if the stars were in control of the Earth, she would have wiped out the Sinai Peninsula and connected the Mediterranean Sea to the Red Sea, rather than digging the Suez Canal, a slender waterway.

She would wipe out all of Panama and adjust the waters on both sides of the isthmus to level the sea level.

If she is willing to spend time, she can divide the oversized Eurasian continent into several parts, she can change the African continent from plateaus to plains, and she can directly transform deserts into grasslands and forests.

Mu Feng understood all this, but he didn't care much.

Because Mu Feng has seen the memory of the stars, the stars who were completely integrated at the beginning, what he did at that time was really a god-level operation.

A galaxy in her hands is a wisp of dust at her fingertips, and if she is not careful, it will be directly crushed.

Of course, it is only in this universe that the stars have this ability to change the heavens and the earth.

According to Xingchen, after entering the Earth Universe with the final fortress, they will most likely enter a state of paralysis.

In the end, the fortress can only operate around a fixed voyage in the state of an ordinary planet, and cannot sail in deep space as a warship.

At that time, it will depend on the scientific and technological level of yourself and the ship girls, so you still have to redouble your efforts.

Mu Feng and the ship girls, after the initial curiosity, quickly returned to their daily work.

The main thing is scientific research.

If when you enter the earth universe, the level of science and technology cannot surpass the earth for an era, and you are not qualified to guide the earthlings.

Three years have passed in a flash.

In the past three years, Mu Feng has built and upgraded all the Chinese ship Niang that there was on the earth, which Xingchen recorded at the beginning, and the Chinese ship Niang that he developed later.

At the same time, Mu Feng has also been working hard with the scientific research team.

The biggest scientific achievement is the complete elimination of electricity and fossil energy systems.

With the support of the resource system prepared by Xingchen before, Mufeng's basic technology has climbed much higher than the applied technology, and the energy system has entered the threshold of qualitative energy transformation to a certain extent.

On this basis, the transformation of the scientific and technological system has finally been completed, from ship power to industrial facilities to daily facilities, all of which have been replaced by direct resource drive.

The previously developed "resource-power" system was not directly and completely eliminated, but the power part of it was transformed.

After several rounds of upgrades, the mass-energy conversion rate of the resource energy system has increased all the way to about 10%, which is 14 times that of nuclear fusion.

The smallest size of a single system, from a set of boilers to the size of a fighter engine, weighed only about a ton.

The entire scientific and technological system, including rocket fuel and engine systems, warship power and equipment drive systems, fighter engine and control systems, weapon effective warheads, etc., has also been comprehensively rebuilt on this basis.

The corresponding weapons and equipment systems have also been completely redesigned.

Within the current planetary range, rockets, warships, and airplanes have all gained almost unlimited range.

A considerable number of military aircraft have become aerospace fighters, which can theoretically enter and exit the atmosphere alone, but they have not been tested in practice for the time being.

The science and technology required for space activities in the early days have formed the most basic theoretical system.

The research and development of relevant spacecraft, equipment, weapons, and communication systems has been completed, and the design of various basic types of spacecraft has also been completed.

However, there was also no actual aerospace test for the time being, and Mu Feng did not rashly transform the ship according to the relevant design plan.

Because the transformation of the fortress is still ongoing, there is an energy barrier in the sky, and space experiments cannot be carried out.

Moreover, estimating the time, the voyage across the universe is about to begin, and the relevant tests may not be left to the Earth universe.

Mu Feng didn't wait too long, and one day more than a month later, the slight vibration that could occasionally be heard underground finally disappeared completely.

The huge pillars of light that ran through the heavens and the earth finally extinguished one after another after more than three years of existence.

Mu Feng knew that this was the final end of the transformation of the fortress.

However, the light curtain in the sky has not disappeared, but has become more condensed, forming a glass-like substance.

Xingchen's doppelganger took the initiative to appear in front of Mu Feng:

"The renovation of the final fortress has been completed, and the construction of the stellar anchor center has also completed 1,024 sets of redundant positioning equipment.

"The preparations for the trans-cosmonal voyage are all complete, and finally the fortress is ready to set off at any time.

"Now let's confirm one last time, the destination galaxy we're going to."

Mu Feng listened and nodded slowly.

Xingchen had already told herself that, according to her speculation, after arriving in the Earth Universe, eventually many of the fortresses and her own abilities would fail.

There will certainly be no recovery in the short term, and it may never recover.

It is foreseeable that for a long time, the fortress will eventually be treated as an ordinary planet, and will exist as the home planet of the ship's maidens.

Therefore, it is necessary to find a suitable stellar orbit, stay for a long time, adapt to the environment of the earth's universe, and continue to develop science and technology.

Stars have built observatories and resource stations in the star system around the Earth within 15 light-years of the planet, and obtained detailed information about these star systems, which can be used to screen for the star systems that will eventually settle.

What affects the environment of a galaxy is, first of all, the condition of the star itself.

Because the weight of stars usually accounts for more than 99% of the mass of the entire galaxy, the mass of the Sun is 99.85% of the mass of the solar system.

For a galaxy suitable for life, its stars must not be too big in the first place.

Most massive stars are irritable and constantly release a large amount of radiation, and apocalyptic phenomena such as supernova explosions, gamma-ray bursts, collapse black holes, and pulsars only exist on massive stars.

Massive stars generally have a short-lived lifespan and a shorter period of stable operation, perhaps only tens of millions of years, and the planets around her have already been destroyed along with the stars before they have time to give birth to life.

The Yellow Dwarf Star, the Sun, has a stable period of up to 10 billion years, allowing life to be destroyed and reborn many times.

Of course, stars can't be too small.

Although the smallest red dwarfs have a long lifespan, tens of billions of years, even in their later years, they only shrink into blue dwarfs and white dwarfs, rather than expanding into red giants like the sun.

However, red dwarfs are too massive, and the habitable zone will be too close to the star, and the planets in the habitable zone will most likely be tidally locked by the star.

One side of the planet is always facing the sun and is eternally daytime with extremely high temperatures, and the other side is eternally facing away from the sun and is eternally dark and extremely low.

Only the temperature near the twilight line is likely to be more even, but there is a large temperature difference between the two sides of the twilight line, which can lead to overactive atmospheric activity.

Tidal forces may also cause tidal heating, making the planet's geological activity extremely intense.

Most of the stars in this area are a sea of fire and a polar region, and the middle zone has a constant super-strong storm, earthquakes, and volcanic lava everywhere, making it a purgatory-like world.

Such an environment is certainly not suitable for survival.

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